Electric punka-motor.



No. 650,995. Patented lune 57 |900.

' H. SPUHL.

ELECTRIC PUNKA MTOB.

(Application filed Mar. 8, 1900. (No Model.) 3 Sheets-Sheet I.

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No. 650,995. Patented June 5, |900. H. SPHL.

ELECTRIC PUNKA MOTDR.

(Application led Mar. 8, 1900.)

3 Sheets-Sheet 2.

(No Model.)

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No. 650,005. Patented June 5,` |000.

' H. SPUHL.

ELECTRIC PUNKA MOTOR.

(Application led Mar. 8, 1900.) (No Model.) 3 Sheets-Shee 3.

halls, or the like.

UNITED STATES PATENT OFFICE.

HEINRICH SPHL, OF ST. GALL, SWITZERLAND.

ELECTRIC PUNKA-IVIOTOR.

SPECIFICATION forming part of Letters Patent N o. 650,995, dated June 5, 1900.

Application filed March 8, 1900.

To @ZZ whom it may concern.:

Be it known that I, HEINRICH SPHL, a citizen of the Confederation of Switzerland, residing at St. Gall, Switzerland, have invented a new and useful Electric Punka-Motor, of which the following is a specification.

Punkas generally are employed in hot countries for cooling the atmosphere in diningrooms, sleepingrooms, shipcabins, or the like; but they also can be used in cold countries for great halls, such as theaters, concert- The object of my invention is to provide a punka oscillated by means of an electric motor. Hitherto these oscillations were effected by hand. Generally the punkas are suspended on the roof; butt-hey also maybe arranged upon columns or suspended on wires.

A feature of my invention is that several punkas can be moved simultaneously. The actuation is effected in one direction only and the movement being imparted to the punka by means of a rope connected to a motor.

My invention will be the better understood with reference to the accompanying drawings, in which similar letters denote similar parts throughout the different views, and in which- Figure 1 illustrates a diagrammatic View of the punka arrangement. Fig. 2 is a detail view of a punka. Fig. 3 illustrates an elevational view, partly being in section. Fig. 4 is a lateral view seen from the side of the arrow indicated in Fig. 3. Fig. 5 is a top view upon the motor. Figs. 6 and 7 are diagrammatic views of the motor in differentpositions. Fig. 3 illustrates a detail view.

The frame 1, Figs. 3 to 5, of the electric punka-motor carries an iron plate 2, to which is fixed an electromagnet 5, having two cores 4, with poles 3, arranged oppositely to one another. Two electric connection-binders 6 and 7 are fixed in suitable manner to plate 2, the derivation of current to the coils 3 ofthe electromagnet 5 being the ordinary one. I consequently do not consider it necessary to give any details relating thereto. A contactlever 11, kept in balance by a counterweight 9, the movement of which is determined by a stop 10, is arranged in the motor-casing 1 in such manner that its free extremity can enter the space between the connection-bind- Serial No. '7.911. (No model.)

ers 6 and 7, thus causing the closure of the circuit, Fig 4.. 12 illustrates the armature, which is movable in vertical direction and which is supported by double levers 16 and 17, carried by shafts 15. The connection between the double levers 16 and 17 and the armature is effected 'by regulation-screws 13 and jointrods M. Buffers 19 and regulable stops 1S are provided for the purpose of softening the shock caused by the attraction of the armature. The double lever 16 at its free extremity is provided with a toothed segment 20, engagin g with the toothed pinion 22, located upon the shaft 2l. Upon said shaft 21, beside the toothed pinion 22, is arranged a ropedisk 23, to a spoke of which is fixed the eX- tremity of the rope 24, Fig. 1. In the construction illustrated in the drawings the rope is supposed to have two branches conducted over guide-rollers 25 and connected to the punkas 26, Figs. 1 and 2. A coupling-piece 29, provided with pins 27 and 28, Figs. 3, 5, and 8, serves to connect the double lever 16 with the lever 17. The bolt 27 has the purpose to influence a roller 30, fixed to the contact-lever 11, Fig. S, and to raise the same up to the connection-binders 6 and 7, thus causing the closure of the circuit, while the pin 28 shall influence the roller 30 for the purpose of interrupting the current by removing the double lever 11 from the connectionbinders 6 and 7. Within a slot 31 of the double lever 17 is arranged a weight 32, which is adapted to be displaced for regulation purposes. This weight 32 serves as counterweight for the armature. 33 represents buffers softening the descending motion of the armature, while the ascending motion of the same, as above described, is softened by the buers 19 abutting against the stops 18.

The modus operandi of the motor is the following: Suppose the circuit is closed. The contact-lever 11 will be in the position as illustrated in Figs. 3, 1, 6, and 8. The electrolnagnet 5 is excited and the armature 12 attracted by the poles 3. This upward-Inovement of the armature 12, by means of the double lever 16 and of the segment 20, is transmitted to the pinion 22 and the ropedisk 23, so as to cause the latter to rotate in the direction indicated by the arrow 34., Fig. 3. In consequence thereof the punkas are IOC drawn from the right-hand side to the lefthand side. (See Fig. 1.) The diagram Fig. 6 illustrates the armature 12 about in the middle of its ascending motion, In the last moment of the latter the pin 28 meets the roller 30 of the contact-lever 1l and removes the same from the connection-binders 6 and 7, the circuit thus being interrupted. Diagram Fig. 7 illustrates the armature 12 at the end of its ascending motion While the oontact-lever 11 is in unlocked position. The armature 12 now falls down, the rapidity of the fall being lessened by the counterweight 32, and owing to the double lever 16 the segment 20, and consequently the pinion 22 and the rope-disk 23, are caused to turn backward in the direction of the arrow 35, Fig. 3. The rope 24 now freely can follow the punka, which in this moment swings backinto original position. Shortly before the armature 12 has completed its descending. movement, the pin 27 meets the caoutchouc roller 30 ofthe contact-lever 11, and raises the latter onto the connection-binder-s, so that the circuit again is closed. 'lhe electromagnet 5 again is excited and a new impulsion is given to the punkas.

Having thus fully described the nature of this invention, what I desire to secure by Letters Patent of the United States is-A In an electric punka-motor, the combination of two connection-binders being positive and negative poles of an electric circuit, with an electromagnet having an armature, a double lever, forcibly submitted to the movement of said armature, a segment attached to said double lever7 a pinion engaging within said segment, a rope-disk rigidly connected to said pinion and carrying the rope attached to the punka, a second double lever arranged oppositely to the first, also being forcibly connected With the armature and causing the closure and' interruption of the circuit, means for counterbalancing said lever, and for softening the upward and downward movement of the armature, for the purpose and substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

nEINRion sPuL.

Witnesses:

JOSEPH SIMON, HANS KOLLERG. 

